@ninjadork i really don't see in why he's still an idiot, i mean, he knows all the consequences of his actes (like i said before with the farmers in Caislean Merlin) in Rumble Town, he faced the harsh truth of our world that he didn't known when he was in Pompo Hills : he saw people get killed before his eyes, he saw freak facist who only believe in their beliefs like Konrad, and he saw that there is people like him, who feel exactly the same as him about kill all those "good" people, but even he really want to kill them, he didn't want to become the monster that they thought they saw. He only want that everybody live properly : he don't give a shit about being the best, or have rivals, etc, etc ... And, Seth be protected of the consequences of his incompetence ? Absoltulety not ! When the only people that were able to perfectely understand how you feel died before your eyes, it's not what i call some plot protection ! The plot didn't protected him, with all the shit that happened to him (cc Piodon, Hameline, Torque, Diabal, and the others one), he is SURE not protected. The plot alowed him to mature whether you want it or not, and Seth matures during the manga, it's a fact that he's still not the idiot he was before Rumble Town. I mean, you didn't gave a shit when he said all he said to Hameline and when he cried before her ? About how he feels, how he see the world, etc, etc ? For you it was only brain damaged ? I mean, found me some pages of the actual chapters (post Rumble Town) where he is brain damaged and simpleton like he was on the volume 1 when he allowed to the Bravery Duet to steal the villager bank. Ha, and also, Seth overcome his flaws, chapter 25 to 28 and even now with the chapter 42 with his Mélie's relationship. Man, when i read you, i don't know why, but i feel like you didn't read the whole Rumble Town arc and the Caislean Merlin arc, i really don't find something that i think right on your judgement, maybe it's only my point of view or my feelings, but sorry guy, i really can't agree with your point :/
Even that, you not seem to be a mean person so anyway i wish you have a nice day btw